Elevator-gate.



PATENTED AUG.14, 1906.

B. LQVBTTB. ELEVATOR GATE. rrmcmxos umm oo'mo. 1905.

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INVENTR PATENTED AEG. X4, 1906.

2 SHEETS-SHEET ilA B. LUVETTE. ELBVATOR GATE.

APPLIGTION IILED 00T 2o 1905 WITNESSES:

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UNITED sfr/Ares BENJAMIN LOl/'l'll'lls OF HALF TO BENJAMIN l?. YANG PATENT OFFICE.

J ERSEY.

Specification of Letters Patent.

latented Aug. 14, 1998.

nomination tiled ctclier 2D* 19H5. Serial No. 283600.

To f1/ZZ whom il; 11e/ry concern.;

Beit known that l, BENJAMIN liovnrrn, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new 'and useful Improvements in Elevator-Gates', and l do hereby declare the following to be nfull, clear, and exact description oi the invention; such as will enable others skilled in the art to which it appertains to malte and use the same, reference being had to the accompanying drawings, and to numerals of reference marked thereon, which forni a part oi this specification.

This invention relates to means for openingand automatically closing the doors of elevator-sha1' ts 3 and the objects of' the invention are to secure a door which is normally held closed and which will remain open only while positively held by the elevator man, to secure a simple and inexpensive construction and one which shall be durable and not likely to get out of order, Vand to obtain other advantages and results, some of which may be hereinafter referred to in connection with the description of the working parts.

fllne invention consists in the improved device for operating elevator-gates, and Vin the arrangements and combinations ol parts ci the same, after set forth and finally clauses of the claim.

Referring to thc accompanying drawings,

in which like numerals of reference irnlieateY corres ending parts in each of tliesevereliigures, igure 1 is a View from the inside of the elevator-shaft of my improved device applied to a gate or door, said door being shown in closed position. Fig. 2 is a similar View showing the position of the various parts of' my apparatus when the door is open. Fig. 3 is a sectional rfiew on line Fig, 1 looking in the direction indicated by the arrow; and Fig. 4 is a section upon line y; Fig. l. Y

In said drawings, of an elevatonsliaft, having a doorway 22 provided with a door 35 which door is adapted to slide in a lane parallel to the said wall, as b means oV rollers 4, running upon a trac 5 in any common and Well-known mani' ner. It will he understood that this door as the elevator comes to a stop in front of it is to he opened by sliding backward or lo the all substantially as will be herein#VY embraced in tlije':

1 indicates the inner wall right-hand side, as shown'in the drawings, and as soon as the elevator leaves said door must lie closed again. 1n accomplishing these ends yby my improved device I pivot upon the wall 1 of the elevator-shaft, as at 6, a lient or bell-crank lever 7, one arm 8 of' which normally lies in horizontal position, abutting at its extremity against the rear edge of the door 3. Preferalo y this erin has an end section 9 longitudinally adjustable with respect to the main portion and pro vided at its extremity with a wheel 10, adapted to run upon a track 11, formed by the rear Vedge of the door. The other arm 12 of said lient lever 7 normally extends downward and carries a weight 13, which Aserres to hold the said lever in its said normal position. When the door is open, as shown in Fig. 2, the tendency of this weighted lever 7 is therefore to automatically close the door, as will be understood by reference to said Fig. 2. For releasing; the said lever 7 from locking relation to the door and opening said door l fulcruin n on the door and nearits edge, as at 14, a re easing-lever 15, one arm 16 of which extends past the rear edge of the door and underlies the arm 8 of the main or locking lever 7Y Another arm 17 cfsaid releasing-lenver 15 extends downward and receives a draft-chain 18, which extends rearward oe- Vneatli the main lever and around suitable pulleys to a point convenient to the operator's hand. Prcferabl said chain 18 extends iist around a pu ley 19, pivoted u on the same shaft 6 with the bent lever 7, t ien u Ward over a second pulley 20, horizontally a ong to the top of the doorway to' af third pulleyfll, and is then provided with a handle 22, hanging at the inner edge of the doorway convenient to the o )erators hand. The said pulleys, as 2O andl closed Vin suitable casings 23, and slieeths ircleralily inclose the chain at ctherpoints of its length. i i

lt will be understood that when the handie 22 is pulled the arm 17 of the releasinglever 1 5 will loe drawn upon and its other arm 16 thrown upward, thus throwing the eXtreml ity Vol the'rnain lookin -lever 7 upward Sullieiently out of perpen iculcr relation to the door, so that said door can open. Such opening is caused by continued draft upon the i handle 22, stop-pins 25 26 limiting motion of 21, are preferably in.

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said lever 15, so that the draft eomes upon the door itself as soon as the main locking-he ver 7 is released. Y

A spring 27 may serve to eushion the arm 8 of the locking-lever as it arrives at its rearward limit of movement in opening the door.

Obviously details of my constructionJ such as the location of the draft-chain and its mountings and the exact forni el' the levers, may be varied without departing from the spirit and scope of the invention. ,l do not, therefore, Wish to be understood as limiting myself by the positive descriptive terms employed herein except as the state oll the art may require.

Having thus described the invention7 whatl I claim as new is 1. The combination with a sliding door, of a pivoted lever adapted to abut at its extremity against said door to hold the same closed, means for holding said lever normally in said locking positionl a releasing-lever mounted upon the door for disengaging the said locking-lever, and draft means connected with said releasing-lever.

2. The combination with a sliding door, ola pivoted lever adapted to abut against the rear edge of said door to hold it closed, means for automatically holding said lever in perpendicular relation to said edge of the door, a releasin -lever fulcrumed upon the door and under ying at one extremity the end of said lookin -lever and draft means connected with the ot ier end of said lever.

3. The combination with a sliding door, of a pivoted lever adapted to abut against the rear edge of s iddo or to hold it elosed` means for 'automatically holding said lever in perpendicular relation to said edge of the door, a releasing-lever fulerumed upon the door and underlying at one extremity the end of said locking-lever, draft means connected with the other end of said lever, and stops limiting the motion of said releasing-lever.

4. The combination with a sliding door, of a lever fulcrumed in substantially the same plane with said door and adapted to engage at its extremity the said door, means for normally holding said lever in engagement with the door7 a releasing-lever fulerumed upon the door and adapted at one end to engage the said locking-lever, and draft means conneeted to said releasing-lever.

5` The combination with a sliding d oor, of a lever fulcrumed in substantially the same plane with said door and adapted to engage at its extremity the said door, means for normally holding said lever in engagement with the door, a releasing-lever fulerumed upon the door and adapted at one end to engage the said locking-lever. draft means connected to said releasing-lever and means for limiting the lnotion ol. said releasing-lever.

(i. rl`he combination with a sliding door, of a lever fulerunwd at the rear of the door in substantially the same plane therewith and adapted at its extremity to engage the said doorJ a. releasing-lever' upon the door adapted at one arm to engage said locking-leverJ a pulley having the same fulcrum as said looking-leverl a second pulley above the first, a third pulleyl and a chain extending from the other arm of said releasing-lever around said sheaves.

7. 'lhe combination with a sliding door, of a bent lever iulerumed at the rear of said door in substantially the same plane therewith and having one of its arms adapted to extend horizontally into en agement at its extremity with the edge o the door, the other arm extending downward and being weighted, a. releasing-lever mounted upon the door for disengaging the said lookin -lever, and draft means Connected with sai releasing-lever.

8. The combination with a sliding door, of a lever fulerumed at the rear of said door and having an extremity lying in substantially the plane of the door and adapted to abut against its rear edge, means normally holding said lever in such engagement with the door, a releasing-lever .fulcrumed upon the door and having an arm underlying the .engaging end of the locking-lever, a second arm extending downward, and draft means extending from said second arm rearward from the door.

9. The eombination with a sliding door, of a pivoted lever adapted to normally abut at its extremity against said door to hold the same closed, a releasing member mounted upon the door and adapted to engage said locking-lever to release the same, and draft means adapted to both operate said releasing member and slide the door open.

10. llhe combination with a sliding door, of a pivoted lever adapted to normally abut at its extremity against said door to hold the same closed, a releasing member mounted upon the door and adapted to engage said locking-lever to release the same, said member having a limited movement independent of the door, and draft means connected to said releasing member.

ln testimony that l claim the foregoing I have hereunto set my hand this 10th day of October, 1905.

BENJAMIN LOVETTE.

Witnesses RUSSELL M. EVERETT, CHARLES H. PELL.

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